Difference between revisions of "Microtubule"

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''noun, plural: microtubules''
 
''noun, plural: microtubules''
  
A [[cytoplasmic]] [[tubule]] made up of [[polymer]]s of alpha- and beta-[[tubulin]] [[dimer]]s. It is the structural component of [[cytoskeleton]], [[cilia]], and [[eukaryotic]] [[flagella]].
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A [[cytoplasmic]] [[tubule]] made up of [[polymer]]s of alpha- and beta-[[tubulin]] [[dimer]]s, and serves as the structural component of [[cytoskeleton]], [[cilia]], and [[eukaryotic]] [[flagella]].
  
  
 
'''Supplement'''
 
'''Supplement'''
  
Structure: a tubular structure with [[diameter]] of 25 nm, length range ranging from 200 nm to 25 micrometers, and wall thickness of 5 nm.
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Microtubules are cytoplasmic tubules that serves as the structural component of [[cytoskeleton]], [[cilia]], and [[eukaryotic]] [[flagella]].  
  
Features: exhibits [[polarity]] and are organized by a [[microtubule organizing center]]s (e.g. [[centriole]]s and [[basal bodies]])
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A microtubule is made up of [[polymer]]s of alpha- and beta-[[tubulin]] [[dimer]]s.  It is a tubular structure with [[diameter]] of 25 nm, length ranging from 200 nm to 25 micrometers, and wall thickness of 5 nm. It exhibits [[polarity]] and are organized by a [[microtubule organizing center]]s (e.g. [[centriole]]s and [[basal bodies]]). Its functions are associated with providing [[intracellular]] shape, [[locomotion]], and [[transport]]. For instance, in cellular division, the microtubules are a source of [[spindle fiber]]s. They give rise to the spindle apparatus that plays an important role in moving and separating chromosomes. There are three main subgroups of microtubules: the polar microtubules, the astral microtubules, and the kinetochore microtubules. The polar microtubules are those that extend across the cell, i.e. from centrosome to centrosome. The astral microtubules are those that anchor the spindle poles to the [[cell membrane]]. The kinetochore microtubules are those that extend from the centrosome to the kinetochore protein in the [[centromere]] of the [[chromosome]].
 
 
Function: renders [[intracellular]] shape, and involved in [[locomotion]] and [[transport]].
 
 
 
Location: [[cytoplasm]] of most [[cells]].
 
  
  
 
''Word origin:'' Greek ''mīkrós '' (small)
 
''Word origin:'' Greek ''mīkrós '' (small)
  
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''See also:''
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* [[Cytoplasmic matrix]]
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* [[spindle fiber]]
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* [[mitotic spindle]]
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* [[meiotic spindle]]
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''Related term(s):''
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* [[Microtubule organizing center]]
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* [[Microtubule-associated protein]]
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* [[Astral microtubule]]
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* [[Microtubule nucleation]]
 
''Related form(s):''  
 
''Related form(s):''  
*[[microtubular]]
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*[[microtubular]] (''adjective'', of or relating to microtubule)
*[[astral microtubule]]
 
*[[Microtubule organising centre]]
 

Revision as of 12:35, 31 March 2017

Definition

noun, plural: microtubules

A cytoplasmic tubule made up of polymers of alpha- and beta-tubulin dimers, and serves as the structural component of cytoskeleton, cilia, and eukaryotic flagella.


Supplement

Microtubules are cytoplasmic tubules that serves as the structural component of cytoskeleton, cilia, and eukaryotic flagella.

A microtubule is made up of polymers of alpha- and beta-tubulin dimers. It is a tubular structure with diameter of 25 nm, length ranging from 200 nm to 25 micrometers, and wall thickness of 5 nm. It exhibits polarity and are organized by a microtubule organizing centers (e.g. centrioles and basal bodies). Its functions are associated with providing intracellular shape, locomotion, and transport. For instance, in cellular division, the microtubules are a source of spindle fibers. They give rise to the spindle apparatus that plays an important role in moving and separating chromosomes. There are three main subgroups of microtubules: the polar microtubules, the astral microtubules, and the kinetochore microtubules. The polar microtubules are those that extend across the cell, i.e. from centrosome to centrosome. The astral microtubules are those that anchor the spindle poles to the cell membrane. The kinetochore microtubules are those that extend from the centrosome to the kinetochore protein in the centromere of the chromosome.


Word origin: Greek mīkrós (small)

See also:

Related term(s):

Related form(s):